Stave bending and forming machine.



E. O. THORSCHMIDT. STAVB BENDING AND FORMING MACHINE.

APPLICATION FILED APB.16, 1914.

Patented Sept. 1, 19%

3 SHEETSSHEET 1.

INVENTOR Wkd- ATTORNEYS Al i mu m WIN/8858.-

TI iE AORRIS PETERS C0,. PP IOTLFLITHO WASHINGTUN, D. C,

E. G. THORSCHMIDT. v STAVE BENDING AND FORMING MACHINE.

APPLICATION mum APR.16, 1914.

1,108,946, r Patented Sept. 1, 1914.

E. G. THORSGHMIDT. STAVE BBNDING AND FORMING MACHINE.

APPLICATION FILED APRJB, 1914.

Patented Sept. 1, 1914.

3 SH-EETSSHEET 3.

WITNESSES: M/VE/VTUR ATTORNEYS 1,: A IJF'RJ. wafii; 50.. PHOTO-LITHO, WASHINGTON. D. C

1O 1 a11d;form1ng machines drying current of air to the surfacesof the T allwhom it maylconcem N TED STATES OFFICE] f innivnsr o. 'lir'rortsornvr113cc, or imw. YoR N; Yo

\ Be it knownqthat I, ERNEST- Tam;-

SCHMIDT, a citizen of theUnitedStates, and a resident-of New Yorln'borough of Brooklyn, in the county of 'Ki'ngs' and State of New York, have invented certain'newand useful Improvements in Stave-Bending and veye I p A still further object is to provide a ma- 3O nation of parts will be FormingMachines, of which the following s a specificatlon.

This invention relates to stave bending continuous traveltype.

One object ofthe present invention is t provide a machine of this character which is economical'in space and simple'and positive inits operation. '1

Another obj ect is to provide means where-' by'each stave is accurately bent and formed to the required shape," so as to impart there to in the same OperatiOn', the transverse curvature corresponding to the diameter of the barrel and the longitudinal curvature corresponding to thebilge of the barrel.

A further object is to provide a construetion which Willpermit the free'access of the stave while it is being carriedby thejcoir chine of comparatively inexpensive construction and which iseflicient, durable and K able' 'mechanism may be provided. Ihavej illustrated ap'air'of arms 18, mounted upon 1 arock shaft 19. The topsof these; arms are" connected by! links 20 with lugs 21 formed reliable in its operation. I

i "The various further objects and advantagesjwill more fully appear ,rromihe de-' tailed description: and the "features of; n0velty residing in the constructionand combiparticularly pointed out in the'claims.

{In the drawings illustrating this invention, Figure 1 is an elevation (partly in section along line, 1-1 of" Fig. 2) of my improved machine, certain parts being broken away for convenience in illustration. Fig. 2 is a plan view with certain parts removed'or cut away for the sake of :clearnes's. Fig. 3 is a detail view illust1atingtl1e,c am for ac tu; Fig. 4 is an end illustrating the feeding mechanism for the stavesQFigy 5 is a detail view illustrating the stops for holding the forms inposition.

The present invention is particularly adapted for-use in connection with what is known as the veneer stave for slack barrel construction. This formof stave is comparatively *thinf, generally about i i particularly of th s'rAvE nnnniive AND ron yrme ivmcn ivn.

Specification of Letters Patent. Pat nted '1,- 19.14;;

' Application filed April 16, 1914. Serial No. 832,285.

thickness and jiis' cut flat and to a uniform s ze; --.'The present- -invention contemplates theben'ding and forming of the staves to'the required shape 1 while I still green, and drying which the staves are piled; just as they come from the veneer machine and cutter in which they arecut flat to'a uniformsize; The bottom ofthe hopper is formed-with a slot-ll, v

througli which the lowermost stave is fed through by a reciprocating feed slidejfl2.

Fire-latter is mounted to reciprocate inguides 13, detacl iablysecured to the stand- I] a'rds' 14, upon WhichTth'efhopper together I with the guidesfare supported. The slide 12 is formed at its sidespreferablywith reduced portions 15," engaginglthe guides, and l an upwardly extending portion 16 disposed so as to engage the lowermost stave to feed rthe sameinto thebendingapparatusproperf.

To reduce'the weightfof theslide, it, may be made in the form of 'an', inverted jdish'edmember, of which the guide portions 15 are the inverted sides; the upwardly projecting H I portion" 16 may be the inverted bottom, whilej E the depending forward portion 17 nonstitutesthe forward side of the dished member.

.{Forreciprocating the feed-slide, any suit the interior of the slide.-'Adj'acent tothe arms is mounted a shaft '22, driven from the mainshaftofth e machine. Upon the shaft timed. The cam-slots 25 of. the cams 23*are the arms-18.1 Thus, the slide is reciprocated I 1 in "accordance with the motion of the main R shaft which actuates theb'ending apparatus and the feeding of-each stave is properly so shaped as to impart a quick motionto the staves to feed the same to the bending appagratus news as the'latter is movedinto proper 13081 51011;

' Iwill now 'describe' the construction and mode of operation of the bending and-tormf ing ap'paratus' itself.

Up n the main driveshaft the ap'i p aratus; j ournaled in suitable standards 27,.

are mounted pair ofsprocket wheels'28', over which pass i the endless sprocket chains a 6o 1 .thesame-until they'have obtamed thelrgset, I

29 to the farther end of' the machine at which are mounted the standards 30, having journaled therein, the shaft 31, carrying the sprocket wheels 32. These sprockets 32 constitute the carriers for the sprocket'chains plates are'formed with curved edges 39, 40

for engaging stavesat the front and rear and form them with a curve corresponding tothe diameter of the barrel. ;To form the bilge in the stave,theform plates 36, 37 38,- etc, are progressively offset from each other upon the'shaft35, so 1 as to, form the necessary curve in the direction of the length of thestave. The connection of theform plates with thesquare shaft may be readily effected in any suitable manner as by casting hubs 41 upon t he,,plates and piercing the hubs by set screws 42 which clamp the latter to the shaft, Any, suitable means may be used for limiting the movement ofthe forms with referenceto the chains. ,In the embodiment of my inyention illustrated herein,-I form the pins 33 with an inwardly extending portion 43 which extend into slots" 44 (Fig. 5) formed in the bottom of the outer form plates such as 36. The adjacent form plates 36 and 36 may be provideol also with interengaging noses 45, 46,

v on the sprocket wheels 28.

the adjacent forms thus mutually support" ing each othersduring their upward travel The noses 46 may also serve as stops to limit the move-- mentof the stave when 1t is first inserted and to keep the latter inproper alinement. After astave has been :fed onto the form indicated generally as A (Fig. 1 and has risento a position about that occupied by,

- the form plate indicated generally as X,

it is actuated toward,thefladjacent form plate Y, immediately in advance. thereof to bend the stave and to,clamp it in bent position. This is accomplished as :follows: Mounted upon the shaft 22 are a pair of cams 47 similar to cams 23. These cams-47 are each formed-with a slot 48 in which is engaged a pin 49 mounted upona rod 50. The latter is guided bya fork 5O? straddling the shaft 22 and is connected through an adjustable. connection 50 to the lower end of a presserlever 51, which is rocked to and f-ro by the cam. The upper end of the lever is formed with a pivotedtip 52, held yield ingly iniplace by suitable meanssuch as a spring 53. As the form plate reaches the position corresponding to the presser lever 51 is rocked back, the tip 52 swinging behind "the shaft 35 and as the lever is swungbacksharply by the rapid rise of the cam, theform X is pressed toward the form Y, compressing the stave to hold it snugly.

,between the two forms to give itthe required shape. hen the stave is so compressed, means are provided for locking the adjacent forms together, so as to firmly hold the stave compressed between the two forms while it travels the length of the apparatus through a drying chamber or to be otherwise treated in any suitable manner, Pivoted uponv the rounded extensions of the s'qua-reshafts 35 are arms 54, having hook portions 55, adapted to closeover the adjacent rear shaft. Before the two forms "have been pressed together, the nose 56 of the hook rides on the contiguous shaft: As

soon, however,.as the two-forms are; pressed together, the nose rides off theshaft andthe hook engages the same to lock the two forms together. The chainmay be given any length oftraveldesired and the weight thereof with the staves" is supported by tracks 57 formed preferably by angle-irons supported upon suitable standards 58. Rollers 59 are mountedupon the pins 43. of the links, these rollers engaging the tracks 57 and forming an anti-friction support for the chain. dVhen theforms reach the ex treme end'of the apparatus, it is. necessary to disengage the hooks, so as to permit the forms to spread during their down travel over the sprocket wheels 32, and finally discharge the staves which have by that time attained their proper shape and have becomeset. This disengagement of the hooks is accomplished as follows: Rotating togetherwith the sprocket wheels 32 on the sides adjacent the hooks are a pair of wheels 60, each of which is formed with inwardly extending pins or lugs 61, one'of thesepins being provided for each hook at a point to one side thereof. Thus, when the arm 34 travels to the'position occupied by arm 34?, the pin 61 reaches the position occupieclby the pin 61", lifting the hooked arm 54 out of engagement with the adja cent shaft, uncoupling the adjacent forms and freeing the stave. The book is kept in its released position until it falls over by its own weight and swings freely down until the forms again rise intheir upward travel on the sprocketwheels 28 As soon. as the stave, in thedownward travel of the forms on the sprocket wheels 32, reaches a position where it can slide off the forms, it drops upon a conveyer 62, and is carried to any desired point to be stored or to be used in the building up of the barrel.

Thestave bending and forming machine above described is composed of inexpensive parts, iseconomical in space and very efficient' in operation; By reason of supportand longitudinal curvature in the same op eration during the travel of the conveyer.

Y It will be understood that many modifications may beresortedjto within the skill of a mechanic: without departing from the scope of the I claim 1. Ina stave forming machine, 'anendless carrier, means for. supportingthe staves appended claims.

onedge onsa'id'carrier through themajor i portionof the travel of the (carrier, said,

chain, forms carried by the chain having thesupporting means comprising forms, and means fOrCOlllPIBSSlIlg the staves in said forms; I

2. In a stave forming mach1ne,'an endless forming surfaces in the direction of the width of the stave disposed substantially transverse to the chain, and means for'compressing the staves between the forms,

3. In a stave forming machine, an endless carrier, means for supporting the staveson edge on said carrier, comprising forms, and

the carrier for compressing the staves be tween the forms; p

4. In a stave forming machine, an endless carrier comprising a chain, sprockets upon which the chain is carried, forms ca rried by the chain, means for feeding a stave between the forms during the upward travel alsoprogressive'ly offset to provide for the of the chain'upon one of the sprockets, and means for compressing the stave between the forms whenit has'reached substantially the top of the sprocket wheel.

5. In a stave forming machine, a pair of endless chains, forms carried thereby and thereof, said forms having their forming surface directly in the width of the stave disposed substantially transverse to the chains, and means for pressing the forms toward each other to compress the staves therebetweena 6. In a stave forming machine, a pair of endless chains, arms carried thereby capable of movement relative to the chalns, forms carried by the free ends of the arms, and means for pressing the adjacent forms toward each other to compress a stave'therebetween.

7. In a stave forming machine,--apair of.

endless chains, forms carried thereby, said forms comprising shafts, spaced plates mounted upon the shafts having their edges transverse to the chains curved to the required curvature of stave, saidplates being toeach other;

bilge in the stave, and-means operating in the direction'of motion of the chain for pressing the forms-toward each other to compress a stave therebetweenp I 8. In a stave forming machine, a pair of endless chains, upstanding arms 'ca'rried thereby,'a shaft mounted in eachfpair of arms, form plates disposed upon the shaft having a curvaturein the direction of' the width of the stave transverse to the chains, and means for actuating'the forms to compress a stave therebetween. I, I 9. In a stave forming machine, an endless chain, forms carried by the chain having the forming surfaces directly in the width of'the stave. disposed substantially transverse to the" chain, means for compressing the staves between the forms,-and means for locking the adjacent forms to each other.-

10. Ina; stave forming machine, an endless carrier comprising a chain, sprocketsupon' which the chain is carried, forms carried by the chain, means for feeding a fstave into a position between the forms during'the upward travel of the chain upon one of the sprockets, means for compressing the stave between the forms when it'has reached sub stantially the top of the sprocket wheel, and

means for locking the adjacent forms to 1- each other.

means actin in the direction of motion of r 11. Inastave forming machine, a pair of endless chains, forms carrled thereby and having a hmited movement longitudinally j-there'of, said forms having their forming surface, directly in the width of the stave forms to each other.

12. In a stave formlng machine, a pair of endlesschains; arms carried thereby capable of movement, relative to the chains, forms carried by the free ends of the arms, means having a -l1m1ted movement longitudmally for compressing the adjacentforms toward each other to compress a stave therebetween,

and means for locking the adjacent forms 13. In a stave forming machine, a

mounted inthe arms, form plates fixed to l the :shafts, means .for actuating the shafts ,towar'd each other to compress a stave between the opposing form plates, and means for locking the shafts to clamp the stave between the forms until it has attained its set.

14. In a stave, forming 1nachine,' a pair of I pair of I endless chalns, arms carried thereby, shafts disposed substantially transverse to the endless chains, arms carried thereby, shafts mounted in the arms,,form plates fiXedto the shafts, means for limiting the relative movement of the forms relative to the chains, and means for locking the shafts to clamp the stave between the forms until it has attained its set.

15. In a stave forming machine, a pair of endless chains, arms carried, thereby, shafts mounted in the arms',,form plates fixed to the shafts, means for actuating the shafts toward each other to compress a stave betweenthe opposing form plates, and hooks pivoted upon each shaft to engage the adjacent shaft to lock the opposing forms to clampthestave therebetween.

16. In a stave forming machine, a pair of endless chains, arms carried thereby, shafts mounted -,in the arms, form plates fixed to the shafts, means for actuating the shafts toward each other to compress a stavebetween the opposing-form plates, and hooks pivotednpon each of the shafts having noses engaging the adjacent shaft to ride thereupon and swing free into locking position when the forms have been actuated into clamping position. Y 17. In a stave forming machine, an endless chain, forms carried by the chain having the forming surfaces in the direction of the width of the stave disposed substantially transverse to the chain, means for compressing the staves between the forms, meansfor locking the adjacent forms to each other, and means for automatically releasing the locking means. i

18, In a stave forming machine, an endless carrier comprising a chain, sprockets uponwhich the chain is carried, forms carried by thechain, means for feeding a stave into a position between the forms during the upward travel of the chain upon one of the sprockets, means for compressing the stave between the forms when it has reached substantially the top of the vsprocket wheel, means for locking the adjacent forms to each other, andmeans for automatically releasing thelocking means.

19; In a stave forming machine, a pair of endless chains, forms carried thereby and having a limited movement longitudinally thereof, said forms having their forming surface disposed substantially transverse to the chains, means for pressing the forms toward each other to compress the staves therebetween, means for locking the adj acent forms to each other, and means for automatically releasing the locking means.

20. In a stave forming machine, a pair of endless chains, arms carried thereby capable of 'movement relative to the cl ains,'fornis carried by the free ends of the arms, means for pressing the adjacent for-ms toward each other to compress a stave therebetween, means for locking the ad acent forms to Copies of this patent may be obtained or sprocket wheels.

each other, and means for automatically releasing the locking means. x 21. In a'stave forming machine, two pairs of sprocket wheels,endless chains driven by the sprockets, forms carried thereby, means for vactuating the form toward each other to compress the stave therebetween,;ineans for locking the opposing forms to each other, and means for releasing the locking means, said means comprising a series of projections traveling together with the sprocket wheels at the discharge end of the chains.

22. In a stave forming machine, two pairs of sprocket wheels, chains carriedthereby, forms carried by the chains, meansxfor actuating the forms towardreachother in. the direction of travel of thewchains, hooks for locking the forms to each other to clamp the stave therebetween, means for automatically disengagmg the;{ hooks comprising wheels rotating with the sprocket wheels at the discharge end of the chains, and projections formed upon the wheels disposed in position to raise thehooks during the course of the travel of the 23. In a stave forming machine, a pair of chains,- shafts carried thereby, forms fixed to the shafts, means for: actuating the shafts toward each other to compress a stavevbetween the forms comprising an arm, means for reciprocating the arm, and a pivoted tip yieldably held in extended position upon the arm to freely swing underthe shafts in the rearward stroke of the arm and to engage the "shafts to actuate them during the forward stroke of: the arm.

24. In astaveforming machine, a traveling carrier, a pair of opposedforms mounted thereon comprising spaced plates having opposed edges constituting forming surfaces curved in a directionof the width of the stave corresponding to the diameter of I the barrel and disposed in a direction-longitudinally of the stave corresponding to the bilge of the barrel, and means for forcing the forms together and clamping a stave therebetween during thetravel of the carrier.

Signed at New York city, in the county of April A. D. 1914.

, ERNEST C. TI-IORSCI-IMIDT.

IVitnesses: l

Win I. COHEN,

MINNIE S. MILLER.

five cents each, by addressing the Commissioner of Patents; Washington, I). G. I

"chains, ,onto the said 

